1 files changed, 60 insertions, 0 deletions
diff --git a/pkg/images/tv/iis/src/zoom.x b/pkg/images/tv/iis/src/zoom.x
new file mode 100644
index 00000000..c7e7bff7
--- /dev/null
+++ b/pkg/images/tv/iis/src/zoom.x
@@ -0,0 +1,60 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include	<ctotok.h>
+include	<ctype.h>
+include	<gki.h>
+include	"../lib/ids.h"
+
+# ZOOM -- zoom, then pan, the display.  If zoom power == 1, then
+# don't bother panning.
+
+procedure zoom()
+
+char	token[SZ_LINE]
+int	tok, count, power, cnum
+short	frames[IDS_MAXIMPL+2]			# frames, graphics, EOD
+real	x, y
+int	ctoi, ip
+
+include "cv.com"
+
+begin
+	# get power for zoom
+
+	call gargtok (tok, token, SZ_LINE)
+	if (tok != TOK_NUMBER) {
+	    call eprintf ("Bad zoom power: %s\n")
+		call pargstr (token)
+	    return
+	}
+	ip = 1
+	count = ctoi(token, ip, power)
+
+	# which frames to zoom
+
+	frames[1] = IDS_EOD		# default all frames
+	call gargtok (tok, token, SZ_LINE)
+	call strlwr (token)
+	if (token[1] == 'f') {
+	    call cv_frame (token[2], frames)
+	    if (frames[1] == ERR)
+		return
+	} else if (tok == TOK_NUMBER) {
+	    call cv_frame (token[1], frames)
+	    if (frames[1] == ERR)
+		return
+	} else {
+	    call eprintf ("Unexpected input: %s\n")
+		call pargstr (token)
+	    return
+	}
+
+	# where to zoom ... find which frame to read cursor position from
+
+	cnum = frames[1]
+	if (cnum == IDS_EOD)
+	    cnum = 0
+	call cv_rcur (cnum, x, y)
+	call cvzoom (frames, power, x, y)
+	call pansub (frames)
+end